Electronic device having a vented battery barrier

A portable electronic device comprising:

• a housing;
• a display at least partially within the housing;
• a transparent cover over the display;
• a battery at least partially within the housing and comprising:
• a battery enclosure;
• a battery cell within the battery enclosure;
• and
• a valve coupled to the battery enclosure and configured to selectively release gas from the battery enclosure;
• a sensing system configured to detect a gas condition within the battery enclosure;
• and
• a processing system configured to selectively actuate the valve to release the gas from the battery enclosure based at least in part on the detected gas condition.

A battery for a portable electronic device, comprising:

• a battery cell;
• a pouch formed of a flexible laminate and encasing the battery cell and defining a hole;
• a sensing component configured to detect a gas condition within the pouch;
• a gas-permeable waterproof membrane extending across the hole in the pouch;
• and
• a valve covering the hole and configured to be transitioned between an open position and a closed position based on the gas condition within the pouch.